Multiscale structures of biological flocs

C. P. Chu; D. J. Lee

doi:10.1016/j.ces.2004.01.040

Multiscale structures of biological flocs

C. P. Chu, D. J. Lee

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

111 Citations (Scopus)

Abstract

The three-dimensional pore structures in waste activated sludge floc were identified using the fluorescence in situ hybridization and confocal laser scanning microscope images. The interior of sludge floc was confirmed to have a multiscale structure, with pore cross-sectional area of 15-20 μm² as the transitional scale. Major advective flow would pass through the large pores, probed as a loosely packed, first level structuration. The chemical flocculation would enlarge the aspect ratio of large pores, while freezing and thawing reduced it. The second level structuration was comprised of fine pores with fractal boundaries, whose detailed structural information was extracted from the constructed floc model. After flocculation, the boundaries of fine pores would become more irregular, and freezing and thawing smoothed it. A sample calculation using the floc model demonstrated the intrafloc transport processes in flocs of multiscale structures. © 2004 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	1875-1883
Journal	Chemical Engineering Science
Volume	59
Issue number	8-9
DOIs	https://doi.org/10.1016/j.ces.2004.01.040
Publication status	Published - Apr 2004
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Research Keywords

CLSM
Floc model
Pore
Structure
Transport process

Access Output

10.1016/j.ces.2004.01.040

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{d9f0e1e2feb84590b7a27d50f1ddfa2c,

title = "Multiscale structures of biological flocs",

abstract = "The three-dimensional pore structures in waste activated sludge floc were identified using the fluorescence in situ hybridization and confocal laser scanning microscope images. The interior of sludge floc was confirmed to have a multiscale structure, with pore cross-sectional area of 15-20 μm2 as the transitional scale. Major advective flow would pass through the large pores, probed as a loosely packed, first level structuration. The chemical flocculation would enlarge the aspect ratio of large pores, while freezing and thawing reduced it. The second level structuration was comprised of fine pores with fractal boundaries, whose detailed structural information was extracted from the constructed floc model. After flocculation, the boundaries of fine pores would become more irregular, and freezing and thawing smoothed it. A sample calculation using the floc model demonstrated the intrafloc transport processes in flocs of multiscale structures. {\textcopyright} 2004 Elsevier Ltd. All rights reserved.",

keywords = "CLSM, Floc model, Pore, Structure, Transport process",

author = "Chu, {C. P.} and Lee, {D. J.}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

year = "2004",

month = apr,

doi = "10.1016/j.ces.2004.01.040",

language = "English",

volume = "59",

pages = "1875--1883",

journal = "Chemical Engineering Science",

issn = "0009-2509",

publisher = "Elsevier B.V.",

number = "8-9",

}

TY - JOUR

T1 - Multiscale structures of biological flocs

AU - Chu, C. P.

AU - Lee, D. J.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2004/4

Y1 - 2004/4

N2 - The three-dimensional pore structures in waste activated sludge floc were identified using the fluorescence in situ hybridization and confocal laser scanning microscope images. The interior of sludge floc was confirmed to have a multiscale structure, with pore cross-sectional area of 15-20 μm2 as the transitional scale. Major advective flow would pass through the large pores, probed as a loosely packed, first level structuration. The chemical flocculation would enlarge the aspect ratio of large pores, while freezing and thawing reduced it. The second level structuration was comprised of fine pores with fractal boundaries, whose detailed structural information was extracted from the constructed floc model. After flocculation, the boundaries of fine pores would become more irregular, and freezing and thawing smoothed it. A sample calculation using the floc model demonstrated the intrafloc transport processes in flocs of multiscale structures. © 2004 Elsevier Ltd. All rights reserved.

AB - The three-dimensional pore structures in waste activated sludge floc were identified using the fluorescence in situ hybridization and confocal laser scanning microscope images. The interior of sludge floc was confirmed to have a multiscale structure, with pore cross-sectional area of 15-20 μm2 as the transitional scale. Major advective flow would pass through the large pores, probed as a loosely packed, first level structuration. The chemical flocculation would enlarge the aspect ratio of large pores, while freezing and thawing reduced it. The second level structuration was comprised of fine pores with fractal boundaries, whose detailed structural information was extracted from the constructed floc model. After flocculation, the boundaries of fine pores would become more irregular, and freezing and thawing smoothed it. A sample calculation using the floc model demonstrated the intrafloc transport processes in flocs of multiscale structures. © 2004 Elsevier Ltd. All rights reserved.

KW - CLSM

KW - Floc model

KW - Pore

KW - Structure

KW - Transport process

UR - http://www.scopus.com/inward/record.url?scp=2442479466&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-2442479466&origin=recordpage

U2 - 10.1016/j.ces.2004.01.040

DO - 10.1016/j.ces.2004.01.040

M3 - RGC 21 - Publication in refereed journal

SN - 0009-2509

VL - 59

SP - 1875

EP - 1883

JO - Chemical Engineering Science

JF - Chemical Engineering Science

IS - 8-9

ER -

Multiscale structures of biological flocs

Abstract

Bibliographical note

UN SDGs

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this